Jack



1. P. oRAu.

IACK.

C APPLICATION FILED BEL20, |920.

PatenteaAug.16,1921. y

I 2 SHEETS-SHEET 1- '1. P. DORAU.

JACK.

APPLICATION FILED DEC. 20, 1920- ].,388, 103. Patented Aug. 16, 1921.

l 2 SHEETS-SHEET 2.

Si ma-' 2a l @vih/woo -i fjrau cially designed for raising the tires 0E ofv UNITED STATES PATENT OFFICE.

JOHN i. Donau, orivon'rn FOND nu LAC, wisconsin.

b inox.

scription of the invention, such as'will enable others skilled in the art to which it appertains to make. and use the same.

This invention relatesV to an improved jack to be used in elevating automobile wheels, and it has for one of its objects to provide a device of this class which is espethe garage floor and retaining it in such position when the. vehicle is put up at night or for long periods, thus relieving the tires of unnecessary weight and greatly prolonging their life.

Another object of the invention is to provide a jack of this class which is extremely simple in construction and very inexpensive to manufacture, thus making it possible to obtain enough of such devices for supporting all of the wheels without placing f the user under unnecessary and/great expense.

A further object of the invention is to provide a jack which is an improvementV over my patented jack disclosedfin Patent No. 1,349,502, granted to me on August 10, 1920. v

InV the referred to patent, there is disclosed a manually operated lever and a supporting standard, the two being connected Y by novel means such as would-permit use of the-.device with4 carsy having wheels of dierent sizes. This invention contemplates theembodiment of all the features disclosed in patented device together with several additional features. Tothis end, the connecting -means is entirely different and is such that it permits quick connection and disconnection of the support and operating lever, permits of relative adjustment, and permits the leverage to be varied so'that ,the operator willbe placed under less strain in using the device. Furthermore, it contemplates a novel oscillatory hub engaging member which assists in settingup thek jack and makes it practically impossible to mar or disfigure the' hub caps. These and other advantages and constructional differences khpplication filed December 20, 1920. Serial No.,431,990.

and features will be set forth more fully asf'the description goes on, i

In the accompanying drawings forming a part of this specification and in which like numerals are employed to` designate like parts throughout the same Figure A1 is a side elevational view of Specification of Letters Patent. ratented Aug,l 1921,

the preferred, form kof jack,the same being j shown in use.

F ig. 2 is a vfront elevation rof the upper portion of the form of jack above. .referred to, parts being broken away to show the'` construction more clearly.

`Fig.` 3 is a kview like Fig. l vshowing a sliohtly modified type of jack. F ig. 4 is a view like Fig. 2`but looking at the `type of jack shown in Fig. 3. Fig. 5 is still another modified form of jack simulating more closely the type of jack disclosed'in the above referred to patent and showing the positionrof vthe parts o f the jack prior to being moved to voperative position'. V

Fig. 6 is a view like Fig. 5 except the partsare .shown in their operative position. Y

, Figs. 7 and 8 are substantially the same as the construction `of jack shown in my patent, except that they are shown as beingr adjustable. s

For the sake offclearness Vof description and also for convenience, I will referto each dierent form of the invention separately.

To this end, Aand by referring to Fig. `l, which is the preferredy form of the invention, itwill'be seen that the device comprises a`supporting leg' 1 and a manually operated lever 2 which can be operated either'by hand or by foot. It is obvious` that in actuating the device, it is :only nec! essary to exert adownward pressure on the lever 2.r Novelv meansv serves to connect the parts l and 2'together and permit them to" j extend beyond the upper ends of this lever in the manner shown, thus forming ears' which are formed with horizontally alined openings constituting bearings. Journaled between the ears 5 and having an oscillatory movement, is a rolle-r 6 which may well be termed here as a hub engaging member'. As better seen in Fig. 2, this roller is provided at its opposite ends with opposed extensions 7 which in one instance-'serve as stops for limiting the movement of the aforesaid roller. Excessive movementv of the roller may possibly permit the device? to become accidentally displaced from its operative position. On the other hand, a slight movement of this hub engaging member is desired so as `to permit the device to be more readily set up. At this point, I wish lto call attention to the fact that the extensions 7 are curved downwardly to permit the hub to become disengaged from the roller without permitting the `hub to become damaged. To further guard against injury to the hub, I entirely cover-or partially cover the roller with a pad of leather or rubber 8, this pad including extensions 9 to cover the extensions 7. I wish to also direct attention to the fact that the aforesaid extensions are long enough to extend beyond the opposite ends of the .retaining bolts which serve to connect the `plates to the standard 1. This being the case, it will be seen that in case the hub should slide endwise off of these extensions, it will not strike against these bolts and thus become injured or marred. Now, by'referring to the other extended parts of the plates, it will be seen that they are formed with vertically spaced bearing openings 10 through which the connecting bolts 11 pass. With this construction and arrangement it will be seen that Va relative adjustment of the lever and supporting standard may be had whenever desired or necessary in order to permit theV device to bel effectively used in connection with cars having wheels of various diameters. The manner inwhich this adjustment is obtained is clearly obvious and need not be described.

Reference being had to Figs. 3' and 4, it will be seen that the form of jack disclosed in these figures comprises, as the already described forms, a supporting standard 1, a manually operated lever 2 and connecting plates 3 which are such as to permit relative adjustment of the parts 1 and 2, the construction employed for this purpose being the same as that already described. The principal kdierence between this type of jack and the one first described, resides in the fact that the jack now under consideration eliminates the use of the movable hub engaging member 6. Instead of this, I merely round the upper end of the lever 2 as shown at 12, and provide it kwith oppositely disposed shallow grooves 13 and I lIn this form of the invention and in all of the others if desired, the lever 2 can well be provided with a plurality of transverse holes 15 for passage of the bolts 4: which permit greater range of adjustment and permit the leverage to be varied when the device is used in connection with heavy vehicles. j Now by referring to Figs. 5 and 6, it will be seen that the form of jack there `shown is more like the one shown in the aforesaid patent. Howe-ver, the jaclr shown in these figures is adjustable and the connecting plates are secured in place in the way al-k ready described. The same reference characters already used are also used to describe the parts in this form of the invention. j

As before intimated, the form of the invention disclosed in Figs. 7 and 8 is practi! cally the same as that shown in my `prior patent. A brief description may well be used here. To this end, the numeral 16 designates the vertical supporting standard and the numeral 17 indicatesV the lever which must be moved upwardly in order to render the device effective. Part 1G is connected to the lever 17 by means of a channel 1S connected to the lever 17 by means of screws or other suitable fastenings 19. The channel includes a laterally extending rib or flange 2O which extends into a groove formed in the lever, this rib serving the purpose more fully set forth in my patented device, The opposite side walls'are formed with a plurality of oppositely disposed bearing openings for passage of the fulcrum pin or bolt 21.

A. careful consideration of the foregoing decription taken in connection with the accompanying drawings is thought to be sufiicient to enable persons skilled lin the art to which the invention relates to obtain a clear understanding of the manner in which the different forms of aclrs are used. Therefore, a description' setting forth the use of the jacks is thought to be unnecessary.

The most vimportant features of the invention have probably become apparent from the foregoing description. However, it may be well to recall that in all forms of the jack, the construction is such as to permit adjustment, whereby any one of the jacks may be used in different size wheels. The construction of the hub engaging roller is such as to permit the jack to be placed in position very easily and to prevent mai-.ring or scratching of the hub cap. Furthermore, considerable bearing surface for the hub is provided and the downturned sections of the hub engaging member will permit the hub to slip off should the device not be properly'placed in position, that is, if the hub is placed too close to the ends of the movable hub engaging member. With all forms of the jack shown and described, the leverage may be varied in order to make it as easy as possible to elevate the car. These and other advantages and features of the invention have, no doubt, become apparent from the foregoing description and drawings.

Since probably the best results maybe obtained with the constructionl and arrangement shown and described, these constructions and arrangements are taken as the preferred embodiment of the invention. However, I wish it to be understood that various minor changes in the shape, sizeand arrangement of parts may be resorted to without departing from the spirit of the invention or the scopeV of the subjoined claims.

I claim:

1. A jack of the class described comprising a lever, plates connected to the upper end of the latter and extending beyond said upper 'end and inner face, said extended portions being formed with Vbearing openings, a supportingy standard arranged between the plates, a fulcrum pin passing through the standard and rotatable in the adjacent bearing openings, and a movable hub engaging member also arranged between said plates and fulcrumed in the adj acent bearings.

with bearings, a supporting standard to which the plates are also connected, and a roller journaledin said bearings, having op- -v posed down-turned extensions at its opposite end and being covered with a hub-protecting pad.

3. A jack for relieving tires of unnecessary weight comprising a relatively short supporting standard,.a relatively long manually actuated lever, said lever and standard .being arranged opposite one another and being of substantially the same width,

connecting plates arranged on opposite sidesr of said lever and standard adjacent the upper ends of the latter, said plates beingprovided with a plurality of openings to permit relative adjustment of the standard and lever and said plates including apertured ears extending beyond the upperend ofsaid lever, a roller movably mounted between said ears, said roller including opposed downturned extensions at its opposite ends of a length to extend beyond the opposite ends of an adjacent bolt, and a pad covering said roller. y

In testimony whereof I have hereunto set m hand.

y JOHN P. DORAU. 

